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the bark of the bebeeru, or green heart of Guiana (Nectandra Rodioei). It is a tonic, antiperiodic, and febrifuge, and is used in medicine as a substitute for quinine. [Written also bibirine.]

A periodic coment, discovered by Biela in 1826, which revolves around the sun in 6.6 years. The November meteors (Andromedes or Bielids) move in its orbit, and may be fragments of the comet.

A blooming period or stage of development; something lovely that gives rich promise. In the blossom of my youth. Massinger.

A periodical publication, especially one containing the proceeding of a society. Bulletin board, a board on which announcements are put, particularly at newsrooms, newspaper offices, etc.

l.), and epoch in the American lower Silurian system, immediately succeeding the Cambrian period. The name alludes to the peculiar mixture of calcareous and siliceous characteristics in many of the beds. See the Diagram under Grology.

Of or pertaining to Calippus, an Athenian astronomer. Calippic period, a period of seventy-six years, proposed by Calippus, as an improvement on the Metonic cycle, since the 6940 days of the Metonic cycle exceeded 19 years by about a quarter of a day, and exceeded 235 lunations by something more.

The period during which a blast furnace is continuously in operation.

A native or inhabitant of Canada. Canadian period (Geol.), A subdivision of the American Lower Silurian system embracing the calciferous, Quebec, and Chazy epochs. This period immediately follows the primordial or Cambrian period, and is by many geologists regarded as the beginning of the Silurian age, See the Diagram,…

of the preservation of the Capitol from the Gauls; when reinstituted by Domitian, arter a period of neglect, they were held every fifth year.

of computation, as in computing the average travel of each car of a system during a given period.

, and characterized by the vegatation which formed the coal beds. This age embraces three periods, the Subcarboniferous, the Carboniferous, and Permian. See Age of acrogens, under Acrogen. -- Carboniferous formation (Geol.), the series of rocks (including sandstones, shales, limestones, and conglomerates, with beds of…

-earth group, accompanying lutecium and scandium in the gadolinite earths. Symbol, Ct (no period).

A period of a hundred years; as, this event took place over two centuries ago.

mon, and sugar in gum water, much used in diarrheal affection, esp. of infants. -- Chalk period. (Geol.) See Cretaceous period, under Cretaceous. -- Chalk pit, a pit in which chalk is dug. -- Drawing chalk. See Crayon, n., 1. -- French chalk, steatite or soapstone, a soft magnesian mineral. -- Red chalk, an indura…

tonic scale. Four bells admit twenty-four changes in ringing. Holder. Change of life, the period in the life of a woman when menstruation and the capacity for conception cease, usually occurring between forty-five and fifty years of age. -- Change ringing, the continual production, without repetition, of changes on be…

An epoch at the close of the Canadian period of the American Lower Silurian system; -- so named from a township in Clinton Co., New York. See the Diagram under Geology.

The commencement; the first period. The childhood of our joy. Shak. Second childhood, the state of being feeble and incapable from old age.

A thousand; the aggregate of a thousand things; especially, a period of a thousand years. The world, then in the seventh chiliad, will be assumed up unto God. Sir. T. More.

The science which treats of measuring time by regular divisions or periods, and which assigns to events or transactions their proper dates. If history without chronology is dark and confused, chronology without history is dry and insipid. A. Holmes.

The art of measuring time; the measuring of time by periods or divisions.